Ring-rolling machine



Feb. 2.8, 1928.

. 1,661,024 f c. c. VENABLE RING ROLLING MACHINE Filed opt. e, 1924 s sheets-sheet 2 Feb. 28, 1928.

C. C. VENABLE RING ROLLING MACHINE 3 Sheets-Sheet 5 Patented Feb. 28, 1928.

rares-'r CHARLES C- vlsm, .Hmele fisitt 15b. VANIA Fon Co'MPANY, oF PHILADELPHIA, PENNSYLVANIA, A oonronA'rIoN or PENNSYLVANIA.

RING-'ROLLING' ittAoiIIN.

Appneamn mea october 8,*1924. sl Ito. @fassa My invention relates to rfolling mills and it has particular relation to ring-rolling mills. One object of my inventionis to provide a rolling mill which sha-l1 avoid the formation of annular recesses on the several sides A further object of my invention is to provide an improved'form of oiitboard beau ing for the mandrel of ring-rolling machine which shall minimize the frictional wear therebetween;

Other objects and applications of my iu'- vention, well details of' construction and (')peration` whereby my `invention may be practiced, will'appear more fully hereinaftei-,when taken in connection. with the aecompanying description, claims and7 drawing, wherein F 1g; iS a, y rolling millA embodying my invention F ig. 2 is a transverse sectional view taken on theline IIL-H of Fig. 1,looking toward the left;

Fig. 3 is a view similar to Fig.'2 but look` ing toward the right, Ytaken on the line 111-111 of Fig. 1; and

Fig. 4 is an enlarged, `detail transversesectional view of the outboard bearing, the sectional plane being taken on the line .lV-IV of Fig. 1.

In the illustrated form of eiiibodiment of my invention shown in the drawing, a pair oi vertically upright standards 1 andv2 hav ing spaced legv portions 3 and 4 are mounted on opposite sides of a central guiding cham-V ber 5 formed in a main `supporting frame 6 carried on a concrete base 7.

The spaced legs 3, 3 vof the vertical standard 1 terminate at their lower ends in a longitudinally extended base 8 which is pr0 vided with a pair of spaced bearings 9 and 11 for a power shaft 1L.` VThe base S'also constitutes anextenslon off one wall of the guiding `chamber 5. Thepower shaft 12 may be extended beyond the' longitudinal extension 8 to provide an'endportion lfwhich serves as amount-ing for gearwheels 14and` l'and a fly wheel 16: The gear'wheel 15 longitudinal'sectional view of a may be actuated from any convenient source of power. v i Each leg portion 3, 4 of the vertical standards 1l and 2 is provided with gtiide surfaces 17 for a vertically movable cross-head 18 which is eonnectedby a pistonrod 19l to a power cylinder 21 suitably mounted on a bracket 22 secured to the upper ends" of the vertical standards 1 and 2, whereby the crosshead 18 may be raised and lowered in accordance with the operation of the cylinder 21.

Opposite ends ofthe cross-head 18 arep'rovided with aligned bearings 23 and 24, which may bedisposed intermediate the spaced leg portions 3, 4 respectively, and they are adapted to receive, a shaft 25 comprising parts 26 andl 27. The parts 26 and 27 may be detachably secured together intermediate the bearings 23 and 24 by providing the former` with a tapered recess1 .28f`and the latter with `a correspondingly formedtapered projjection`29. The tapered recess 28 may terminate in a threaded' boring 31' for there! ception of `a screw bolt' 3,2 which extends u through an axial perforation 33 in the shaft` part 27 Ato the outer end thereof. A roll 34 may bexlieyedt'o the shaft part 26 and rigidly held in'position by rmeans of alock mit 35 mounted on the adjacent end of the shaft part 27. y v A The' shaftg part 26 carries abevel gearwheel 36 which meshes witha bevelwgear-y wheel 37 revolubly mountedin-a bearing 38 loosely supportedonthe shaft part 26." The bevel gear-wheel 37 .issplind toafvertieal shaft 39, anupper endof which is revolubly mounted in a bearing 41 carried by abracket 42 extending from the upper end ofthe vertical standard 1'.v A lower end of the vertical shaft 39 carries a bevel gear-wheel 43 which meshes with a bevel gear-wheel 44 formed on a portion of the power shaft 12 intermediate the bearings 9 and 11. Thus,

itis apparent that the bodily movable shaft i ative relation to the roll 34 in the space intermediate the standards l and 2 by eX- tendingthe end 46 thereof into an adjacent boring` 47 in the end of the power shaft l2, and it may be secured in this position by -means oit a screw bolt 48 which extends axially through a perforation 49 in the power shaft 12 into a threaded boring 5l in the mandrel 45. For purposes of illustration, a particular form of mandrel and pressure roll have been sh-own with a finished ring- 52 in operative engagement therewith but of course these parts may be variously modified.

The sides of the ring 52 may be worked during the rolling operation by means oil' side pressure rolls 53 and 54, which are vertical- -y positioned in the guiding chamber 5, the former side roll being revolubly mounted in a bracket 55 havingan adjustable dove-tail connection 56 (Figs. 1 and 2) with a verti cal arm 57 of a supporting member 58. The member 58, which is secured to the main v frame 6 and to the base 8, may be provided with a plurality of radially extending arms 59 each of which carries an adjustable bracket 6l having a size roll 62 revolubly mounted thereon. In operation, a templet (not shown) having the desired maximum diameter, is mount-ed in the position occupied by the ring 52 and the several size rolls 62 are then so adjusted as to engage the peripheryl thereof and clamped in position. rIhus a number of rings of any predetermined diameter inay be obtained.

The side pressure roll 54 may also be mounted in a bracket 63 (Fi gs. l and 3) having a dove-tail connection 64 with a carriage 65 which is disposed intermediate the leg portions 4 ot' the standard 2 and slidably mounted on spaced ways 66 and 67 formed on the main supporting frame 6, whereby the carriage 65 and hence the side pressure roll 54 may be moved toward and from the ring 52. The movement of the carriage 65 may be further guided by providing spaced shoulders 68 and 69 which are adapted to engage respectively shoulders 7l and 7 2 formed on the leg portions 4 of the vertical standard The carriage G5 also serves to extend vertically one wall of the guiding chamber 5 as in the case of the base 8.

lvly invention further contemplates the provision of an outboard bearing 73 (Figs. l, 3 and 4) on the upper side of the movable carriage 65 for the free end of the mandrel 45. The outboard bearing 73 may comprise a sleeve 74 having the opposite ends thereof provided with flanges 75 and 76, the former heilig disposed in frictional engagement with the pressure roll 34. A washer 77, which is disposed between the ring 52 and the adjacent surface ot the iiange 75. may have a detachableV connection therewith. The frictional contact between the sleeve 74 and the mandrel 45 may be such as to cause the rotation of the former, whereby anyftendency of the mandrel 45 to cut or tear the several parts of the outboard bearing 73 may be avoided. The sleeve 73 may be revolubly mounted in movable supporting members 78 and 79 which are disposed between adjacent vertical side walls 8l and 82 ot' the movable carriage 65.

In order to compensate for suoli wear as occurs in the outboard bearingI 73, I provide cam blocks 83 and 84, which may be caused to exert a vertical force on the supporting member 79 by means of an adjusting screw 85 extending between the side walls 8l and 82, as will be understood by those skilled Vin the art.

The carriage 65 may be actuated by means of a cylinder 86, a connecting rod 87 of which is secured to the movable carriage 65 through an adjusting device 88. The latter is designed to provide for small adjustments in the' position ot' the side pressure roll 54 with respect to the coacting pressure roll 53.

The operation of the cylinder 86, therefore, Y

may cause the pressure roll 54 to engage the ring 52 with a desired force or it may cause the retraction of the carriage 65 from the position shown in Fig. l to suoli extent that the ring 52 may be readily removed from the mandrel 45 and another inserted in its place. In the experimental development of my invention, some diliiculty was experienced due to the failure of the side pressure rolls 53 and 54 to revolve with the ring 52, particularly when the rolls 53 and 54 were of small diameter, but this has been avoided by posi tively driving the same. To this end, bevel gear-wheels 89 and 91 are mounted onthe lower end oi the side pressure rolls 53 and 54 in mesh with cooperating` bevel gearwheels 92 and 93, resjieetively. Thel bevel gear-wheel 92 may be rigidly secured t0 a horizontal shait 94 which is connected by gear-wheels 95 and 96 to the driving .gearwheel 14. ln orderto provide for `the necessary longitudinal movement ot the carriage 65, the bevel gear-wheel 93 may be splined to the shaft 94, so that the side pressure roll 54 may be positively actuated at all times regardless of the position of the carriage 65.

Vfhen a. ring is to be rolled, the cylinder 2l is actuated to cause a yvertical movement of the shaft 25 to a position where no inter terence occurs with the mandrel 45. The shaft part 27 is then removed and a roll 34 of desired form is mounted on the shaft part 26, the parts being then clamped inposition. The cylinder 86 may also be energized to remove the outboard bearing 73 out of engagement with the mandrel 45 in order that a templet ring may be mounted thereon and theseveral size rolls 62 adjusted accordingly. Following the removal of the templet 1jing,.tl ie ring tobefinished is placed on the mand-rel bandi the cylinders21 and', 86 actuated to bring the rolll and the side pressure roll Minto working relation witlr the ring.. As the rolling operation progresses, tliemetal inthe ring Iis so worked as to increase the diameterI of the saine and, by reas oii of the circumferential,andV lateral rol-lingy a yfinishedring is' finally obtained-'chan acterized-by the absence of the usual" annular, recesses.,` y y A u, While ,I have 4shown only one form of emf bodimentof my invention,` for" t-lie purpose of Vdescribing,the saine and illustrating its principles of construction;` and operatiomit is apparent thatNv-arious changes and modiiications inaywbe made therein without departing from the spirit of my inveiitioii,an`d I desire, therefore, that only such limitations shall be imposedthereon asiareindicated in the appended claiins or as 'aredemanded by the prior art'.

I claim: i t g 'l1- Apparatus comprising a mandrel, acooperating pressure roll, a side roll, and means constituting an outboard bearing for said mandrel and asupport for said side roll. y l.

2.. In combination, ai mandrel, acooperating pressure roll, side rolls,=means whereby said side rolls may be positively actuated, and reciprocatory ineansconstituting a-bearing for said mandrel and a support for at least one of said side rolls. A l t 3. In a rolling mill, the combination with a pair of cooperating rolls positioned toy engage respectively the inner and oiiter oir'- ciimference of a: ring, of a pair off rollsposi-r tioned to engage respectively the sides of saidl ring, common actuating means'forsaid rolls, and a power operated slide constitut,

ing an out-board bearing `forvone ofi saidrstementioned pair of rolls and a support for one of said pair of side rolls. A 4. A rolling mill comprising al pair of rolls spaced to receive therebetween an ele nient to be operated'oma second pair of rolls so positioned laterally of said first-mentioned pair of` rollsasA to engage opposite sides ofV said element, ,common actuating means for said rolls, and' air-power` operated carriage for bodily movingcertain of said rolls and for providing an outboardbearing for'oiie ofthe remaining rolls.

5. Apparatus comprising a pair of rolls )ositioned to enO'aUe res ectivelvV the inner b D -1 and outer` circumference of a ring," a second pair of rolls so lpositioned as to engage respectively the sides of said ring,and arniovable carriage providing a: support for one 'an outboard bearing for of a ring, a second pair of rollsifo'r respecl" tively engaging the sides oit said ring, common actuating means for said rolls, and amovable carriage adapted to serve asfan outboard bearing for one roll andl as a support for another roll.

7. In a ring-rolling machine, the combination with a pair of horizontal `rolls positionedf to engage respectively the inner and outer circumference of aA rig,of a pair of laterally positioned rolls'adapted to engage respectively the sides of said ring, means for driving' said rolls, means for bodily moving one of said side rolls, said means providing' an outboard bearing for one of said horizontal rolls, and size rolls having predetermined positions.

8. In a rolling mill, apairof angularly positioned rolls, and aepower-operate'd carriage adapted to constitute an outboard bearing; forone of said rolls and to support bodily the other of said rolls;

9e A rolling mill comprising a pair off a'ngularly positioned rolls, a' power-operated arriage adapted to constitute an outboard bearing for one of said rolls and to support bodily the other of said rolls, andV a common power shaft for said rolls. t

10; In aring-rolling mac`liine,the combination with a mandrel and a cooperi'itingV pressure roll, of power means f'or actuating said `pressure roll relative to said mandrel, side pressure rolls, power nieanstor actuatingy one of said' side pressureV rolls relative tothe other and for supporting one end of said mandrel, and a common power shafty for positively ,driving said rolls.

11. In airollingmillathe combination with a shaft,` of.` aI movable carriage adapted' to constitute airoutboardf' bearing therefor, and a roll carried by said carriage, said bearing comprising a revoluble sleeve havinga flanged end` portion anda washer detachably secured to said flanged end portion.

12. Iii a ring-rolling maehine, the combination with a mandrel, of a" cooperating pressure roll, a movable carriage having means constituting an outboard bearing for said mandrel, said' means including a revolubly mounted sleeve adapted to be actuated' by frictional Contact with salidmaning means constituting an outboard bearing for saidfmandrel, said means' comprising a" revoluble vertically-adjustablesleeve mounti ed in frictionalcontact with saidi mandrel, said sleeve `liaving a flanged end portion for e'nciafiinor saidroll anda' washer inter osed b C b 7 between said flanged end portion and 'the ring to lie-operated on.

141. Ih aringrolling` machine, the `combi` nation with a mandrel, of a cooperating pressure roll, a movable carriage having means constituting an outboard bearing for said mandrel, said means comprising a revoluble vertically-adjustable sleeve mounted in fric-` tional Contact with said mandrel, said sleeve having' a flanged end portion for engaging said roll, and a Washer interposed between said flanged end portion and the ring to be operated on, said washer being detachably secured to said flanged end portion and disposed in frictional Contact with said inandrel.

l5. A ring-rolling machine comprising a pair of spaced standards, of which one is provided with spaced legs, a vertically-movable cross-head so disposed as to be guided by said standards, said cross-head being provided with bearings, and a pressure roll carried by said bearings and extending between the legs of said standards.

16. A rolling mill comprising a pair of spaced standards, a cross-head movable vertically between said standards, a pressure roll revolubly supported on said cross-head, a cooperating mandrel, and means' operatively connecting said mandrel and said pressure roll, whereby an operative connection may be maintained therebetween for all posi` tions of said pressure roll. y

17. Apparatus comprising a pair of spaced standards, each standard having verticallypositioned legs provided with guiding surfaces, a cross-head disposed intermediate said standards in contact with said guiding surfaces, said cross-head having bearings extending from the opposite sides thereof intermediate the legs of each standard, a pressure roll revolubly mounted in said bearings, a cooperating roll, and a carriage movable intermediate the legs of one ofsaid standards, said carriage being adapted to serve as an outboard bearing for said last-mentioned roll.

18. A ring-rolling machine comprising a pair of spaced standards, each standard having vertically-upright spaced legl portions, a cross-head slidaloly disposed intermediate said standards in cngagen'ient with said leg portions, said cross-head having` bearings eX- tending from the opposite ends thereof intermediate the leg portions of each standard, a shaft mounted in said bearing portions and provided With a roll, a cooperating mandrel, the lower portion of one of said standards being formed to provide a support for one end of said mandrel, a carriage for supporting the other end of said mandrel, said carriage being slidably mounted intermediate the leg portions of the other standard, and a side pressure roll revolubly mounted on said movable carriage.

19. A ring-rolling machine comprising a supporting` frame,spaced standards mounted von said frame, each standard having spaced, vertically extending leg portions, a cross-head slidably mounted intermediate said standards, a pressure roll revolubly mounted in bearings formed in said crosshead, one of said standards being kformed to provide a bearing, a power shaft mounted in said last-mentioned bearing and terminating in a mandrel positioned in cooperative relation to said pressure roll, means for operatively associating said power shaft and said pressure roll for all positions ofthe latter, a carriage slidably mounted intermediate the leg portions of the other of said standards, said carriage constituting an outboard bearing for the free end of said mandrel, a side pressure roll mounted on said carriage, and means for operatively associating said power shaft and saidside pressure roll. I

20. A ring-rolling machine comprising a pair of spaced standards, a movable crosshead so disposed as to be guided by ksaid standards, said cross-head being provided with bearings, and a tivo-part pressure roll shaft carried by said bearings. n

21. A rring-rolling machine comprising la pair of spaced standards, a movable crosshead so disposed as to be guided by said standards, said cross-head being provided with bearings, and a tu'mpart pressure roll.

shaft. carried by said bearings, the endsy of said shaft parts being detachably secured intern'iediate said bearings.

22. A ring-rolling machine comprising a pair of spaced standards, a movable crosshead so disposed as to be guided by said standards, said cross-head being provided with bearings, a tivo-part pressure roll shaft carried by said bearings, the ends of said shaft parts being detachably secured inter-- mediate said bearings, and a pressure roll mounted on one of said shaft parts.

23. ln combination, a pair ofrolls, and a power-operated carriage adapted to constitute an outboard bearing for one of the rolls and to support bodily the other'of said rolls, said carriage also defining one Wall of a guiding chamber.

24. Apparatus comprising a roll, a co-operating bodily movable roll,l a carriage constituting one element of a guiding chamber and adapted to provide a journal for the outboard end of said tirst-nientioned roll, and a side roll positioned in said chamber and bodily movable with' said carriage.

25. A roll for engaging the Acircumference of a member to be treated, means constituting one element of a guiding chamber and adapted to provide La removable outboard bearing for said roll, a roll for engaging the side of said member positioned in said guiding chamber and movable bodily With.4 said means, a movable pressure rolland means for so operatively associating said last-mentioned roll and said lirst-inentioned yroll that an operative connection may be maintained therebetween for all positions of said pressure roll.

26. Apparatus comprising a pair of spaced standards, of which one is provided with legs, a roll, and a carriage movable intermediate said legs and adaptedto serve as a bearing for the outboard end oi said roll.

27. Apparatus comprising a pair of spaced standards, of which one is provided with legs, a roll, a carriage movable intermediate said legs and adapted to serve as a bearing for the outboard end of said roll, and a side roll carried by said movable carriage.

28. Apparatus of the class described co1nprising a standard having a pair of spaced legs, a roll-supporting cross-head, a stationary roll, a carriage constituting an outboard bearing for said stationary roll mov' able between the legs of said standard, and a side roll carried by said carriage.

29. Apparatus of the class described coinprising a standard, a pressure-roll crosshead guided by said standard, a relatively stationary roll, a power-operated carriage constituting one element of a guiding chamber and movable intermediate the legs of said standard, said carriage constituting an outboard bearing for said relatively stationary roll, and a side roll movable With said carriage.

30. Apparatus comprising a pair of spaced standards, each of Whichis provided with a pair of legs, a roll extending between the legs of one of said standards,-a poweroperated carriage movable between the legs of the other standard and adapted to constitute an outboard bearing for said roll, and side rolls respectively carried by said carriage and one of said standards.

3l. Apparatus comprising a pressure-roll cross-head, a pair of spaced standards constituting a guide therefor, each of said standards having a pair of legs, a roll extending betWeen the legs of one of said standards, the latter standard being formed to provide a journal for said roll, a carriage for supporting the outboard end of said roll and movable between the legs of the other standard into an ineffective position, and side pressure rolls respectively carried by one of said standards and said carriage.

32. Apparatus `comprising a pressure-roll cross-head, a pair of guiding standards therefor, each of said standards having a pair of legs, a relatively stationary roll, one oi' said standards having a longitudinally extended portion providing a bearing for said roll, a powerfoperated slide constituting an outboard bearing for said roll and having a path of travel intermediate the legs of the other standard, and side pressure rolls respectively carried by said power-operated slide and said longitudinally eX- tended portion.

33. Apparatus of the class described comprising a standard constituting a guide for a pressure-roll cross-head, said standard having a pair of spaced legs, a relatively stationary roll said standard also having a base portion providing a bearing for said roll, said base portion serving as one ele ment of a guiding chamber, and a side roll secured to said base portion in said guiding chamber.

34. Apparatus comprising spaced stand` ards, each of which is provided with a pair of legs, a cross-head slidably mounted intermediate said standards, a pressure roll mounted on said cross-head, a stationary roll in co-operative relation to said pressure roll, one of said standards being formed to provide a bearing for said stationary roll, means for operatively associating said stationary roll and said pressure roll for all positions of the latter, a carriage movable intermediate the legs of the other of said standards constituting an outboard bearing :for said stationary roll, and a side pressure roll mounted on said carriage.

35. A pair of power-operated carriages disposed in angular relation, a pressure roll carried by one of said carriages, a roll cooperating With said pressure roll, and a side roll carried by the other of said carriages, the latter carriage being adapted to constitute an outboard bearing forsaid secondmentioned roll.

cHARLEs c; vENABLE.

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